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All Journal International Journal of Mechanical Engineering Technologies and Applications (MECHTA)
Gapsari , Femiana
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Automotive Engineering Energy Engineering Industrial & Manufacturing Engineering Mechanical Engineering

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PREPARATION AND CHARACTERIZATION OF MICROCRYSTALLINE CELLULOSE FROM OIL PALM FROND BY CHEMICAL AND MECHANICAL TREATMENT Randis, Randis; Darmadi , Djarot B.; Gapsari , Femiana; Sonief , Achmad As’Ad; Rus , Tatag Yufitra
International Journal of Mechanical Engineering Technologies and Applications Vol. 6 No. 1 (2025)
Publisher : Mechanical Engineering Department, Engineering Faculty, Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/MECHTA.2025.006.01.8

Abstract

Oil palm fronds are currently an underutilised by product of plantations. The micro and nano cellulose can be utilised to create new goods, such as being used as a filler in environmentally friendly degradable composites. This study examined the process of extracting oil palm frond fiber (OPFF) by using a series of chemical and mechanical treatments to get pure microcrystalline cellulose (MCC). The MCC obtained by OPFF was subsequently analysed in further detail. The identification of morphological analysis, presence of functional groups, and crystallinity index were conducted using Scanning Electron Microscopy (SEM), Fourier Transform InfraRed (FTIR) and X-Ray Difraction (XRD) techniques. The findings revealed the presence of microcrystalline structures in OPF fibers, having a mean measurement of width 3.2 ± 0.42 ?m. The application of FTIR verified that the elimination of noncellulosic constituents from the treated OPF fibers had achieved its utmost level. Simultaneously, X-ray diffraction research revealed that the utilization of chemical procedures resulted the formation of a characteristic cellulose crystal structure and an augmentation in the crystallinity index. However, the mechanical treatment resulted in a minor drop in the crystalline index. This can be ascribed to the disturbance of cellulose chains and the crystal structure within the cellulose fibers. The cellulose obtained from raw fibers and subsequent processing exists in a very pure form, specifically in the cellulose I? structure. This enables its utilization as reinforcement in eco-friendly MCC-based green composites, offering numerous benefits.
PREPARATION AND CHARACTERIZATION OF MICROCRYSTALLINE CELLULOSE FROM OIL PALM FROND BY CHEMICAL AND MECHANICAL TREATMENT Randis, Randis; Darmadi , Djarot B.; Gapsari , Femiana; Sonief , Achmad As’Ad; Rus , Tatag Yufitra
International Journal of Mechanical Engineering Technologies and Applications Vol. 6 No. 1 (2025)
Publisher : Mechanical Engineering Department, Engineering Faculty, Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/MECHTA.2025.006.01.8

Abstract

Oil palm fronds are currently an underutilised by product of plantations. The micro and nano cellulose can be utilised to create new goods, such as being used as a filler in environmentally friendly degradable composites. This study examined the process of extracting oil palm frond fiber (OPFF) by using a series of chemical and mechanical treatments to get pure microcrystalline cellulose (MCC). The MCC obtained by OPFF was subsequently analysed in further detail. The identification of morphological analysis, presence of functional groups, and crystallinity index were conducted using Scanning Electron Microscopy (SEM), Fourier Transform InfraRed (FTIR) and X-Ray Difraction (XRD) techniques. The findings revealed the presence of microcrystalline structures in OPF fibers, having a mean measurement of width 3.2 ± 0.42 ?m. The application of FTIR verified that the elimination of noncellulosic constituents from the treated OPF fibers had achieved its utmost level. Simultaneously, X-ray diffraction research revealed that the utilization of chemical procedures resulted the formation of a characteristic cellulose crystal structure and an augmentation in the crystallinity index. However, the mechanical treatment resulted in a minor drop in the crystalline index. This can be ascribed to the disturbance of cellulose chains and the crystal structure within the cellulose fibers. The cellulose obtained from raw fibers and subsequent processing exists in a very pure form, specifically in the cellulose I? structure. This enables its utilization as reinforcement in eco-friendly MCC-based green composites, offering numerous benefits.
SUSTAINABLE CORROSION INHIBITION OF COPPER USING SANTOL (SANDORICUM KOETJAPE) FRUIT PEEL EXTRACT IN ACIDIC MEDIUM Ainunsyah, Zul; Gapsari , Femiana; Darmadi, Djarot B.; Sasmito, Muhammad
International Journal of Mechanical Engineering Technologies and Applications Vol. 7 No. 1 (2026): January - June
Publisher : Mechanical Engineering Department, Engineering Faculty, Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776//MECHTA.2026.007.01.9

Abstract

Corrosion control is crucial to material protection, particularly in industrial applications where metal degradation leads to significant economic losses. One of the major challenges in corrosion research is finding effective and eco-friendly inhibitors that can replace traditional toxic chemical inhibitors. This study explores the use of Santol (Sandoricum koetjape) fruit peel extract as a potential green inhibitor for copper corrosion in a 1 M HNO3 solution. Electrochemical techniques, including potentiodynamic polarization (PDP) and electrochemical impedance spectroscopy (EIS), were used to evaluate the inhibition efficiency of the extract. The results showed a significant reduction in the corrosion rate, with an inhibition efficiency of 77.33% from PDP analysis and 97.50% from EIS measurements. The corrosion current density decreased from 1408.30 microA to 319.25 microA, and the charge transfer resistance increased from 22.56 Ohm to 902.88 Ohm. Santol fruit peel extract effectively inhibits copper corrosion, promoting the development of sustainable corrosion inhibitors and using agricultural waste as an alternative to conventional chemical inhibitors.
Co-Authors Ainunsyah, Zul Darmadi , Djarot B. Djarot B. Darmadi, Djarot B. Randis Randis Rus , Tatag Yufitra Sasmito, Muhammad Sonief , Achmad As’Ad